code: def test_type_decl(self):
      self.assertRaises(
          error.DataShapeTypeError, dshape, "type X T = 3, T"
      )
  
imports: from __future__ import absolute_import, division, print_function
  import ctypes
  import unittest
  import pytest
  from datashader import datashape
  from datashader.datashape import dshape, error, DataShape, Record
label_desc: Use image node_id 7 for calling the TestDataShapeCreation obj's underlying member method code with example usage: obj.test_type_decl() without return types